Complex cyanides as chemical clocks in hot cores | Astronomy & Astrophysics (A&A)

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Volume 616 (August 2018)

A&A, 616 (2018) A67

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Table D.3

As Table D.1 for A.

A	n × 10⁷			n 10⁸			n 10⁹


	Fast	Medium	Slow	Fast	Medium	Slow	Fast	Medium	Slow
CH₃OH	21 700–22 300	84 000–87 000	415 000–430 000	22 000–22 800	86 500–89 000	423 000–438 000	22 700–23 200	88 500–92 000	438 000–460 000
C₂H₅OH	>23 000	90 000–96 200	430 000–440 000⋆	>23 500	92 000–96 500	439 000–452 000	>24 100	94 000–99 500	450 000–465 000
CH₃CHO	13 800–23 400	52 000–90 000	260 000–410 000	22 300–24 500	81 500–94 300	395 000–420 000	22 000–23 500	83 000–97 000	450 000–475 000
CH₃OCHO	>24 500	89 000–90 500⋆	350 000–365 000	21 700–22 100⋆	93 000–95 300⋆	460 000–465 000	20 500–21 000	91 000–92 000⋆	470 000–485 000⋆
CH₃CN	21 300–23 000	80 000–87 000	370 000–410 000	22 400–23 800	86 000–89 000	415 000–425 000	23 000–24 700	89 000–92 000	425 000–435 000
CH₂CHCN	>28 500	95 000–105 000	435 000–465 000	>28 500	97 500–110 000	470 000–480 000	>32 000	99 500–110 000	480 000–490 000
C₂H₅CN	>25 200	97 300–99 000	472 000–480 000	>29 000	>105 000	490 000	not reproduced	>10 3000	500 000
HC₃N	21 000–21 600	81 500–85 000	380 000–400 000	21 400–22 100	83 500–86 000	405 000–415 000	22 000–22 700	86 000–88 700	418 000–430 000

Best time period fit	21 600–28 500	85 000–97 300	365 000–472 000	22 100–28 500	86 000–105 000	415 000–490 000	no fit	88 700–103 000	430 000–500 000
Temperatures (K)	93–158	94–121	75–119	97–158	96–139	94–127	88–198	102–134	100–132
Limiters	HC₃N CH₂CHCN	HC₃N C₂H₅CN	CH₃OCHO C₂H₅CN	HC₃N C₂H₅CN	HC₃N C₂H₅CN	HC₃N C₂H₅CN	CH₃OCHO CH₂CHCN	HC₃N C₂H₅CN	HC₃N C₂H₅CN

Notes. The star symbol indicates that more than one time fits the observed abundance.

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